class Car:
    #类
    wheels=4

    def drive(self,speed):
        self.wheels=4
        print(f"driving......{speed}..")

    @classmethod
    def stop(cls):
        print("stop+++++++")

    @staticmethod
    def test():
        print("test=======")

        car1 = Car()
        car1.drive()
        print(Car.wheels)
        Car.color = 'red'
        print(Car.color)
        car1.stop()
        Car.stop()
        car1.test()

